Remove trailing whitespace in run_benchmarks.py

Author: mdboom

bench_runner/scripts/run_benchmarks.py

@@ -86,7 +86,7 @@ def run_benchmarks(
     if loops_file := os.environ.get(LOOPS_FILE_ENV_VAR):
         extra_args.append("--same-loops")
         extra_args.append(loops_file)
-        
+
     if affinity := os.environ.get("CPU_AFFINITY"):
         extra_args.append(f"--affinity={affinity}")